Cooking-stove



N. BOSWORTH.

Cooking Stove.

Patented "Aug. 28, 1847.

N. PETERS Phomulhn m hyr. Wamin mn. D. C.

.UNITED STATES PATENT OFFICE.

NATHANIEL BoswoRTH, JR, or TROY, NEwYoRK.

cooxmc-srovn.

Specification of Letters Patent No. 5,260, dated August 28, 1847.

To all whom it may concern Be it known that I, NATHANIEL Bos- WORTH, J r., of Troy, in the county of Rensselaer and State of New York, have invented a new and Improved Cooking-Stove; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the accompanying drawings, making part of this specification, in which Figure 1, is a front view, Fig. 2, a vertical longitudinal section, and Fig. 3 a top view thereof,the upper plate being supposed-to be removed.

The same letters refer to the same parts in all the figures.

a is the oven placed directly in the rear of the fire box I), or rather this latter may be considered as suspended within the front part of the oven.

d cl, 6 e and f f are three flues the entire breadth of the stove, and formed respectively by, and between the top plate of the oven, and that of the stove; the back of the oven, and the back plate of the stove; and the bottom of the oven and the bottom plate of the stove. The latter flue f f extends forward to the front of the stove and there communicates with the two vertical corner flues g g which pass up at each side of the front flue doors 7:. h, and are connected at the top by the horizontal cross flue 2' z', immediately'above whichand of course at the front of the stove, is placed the smoke pipe j.

At is an opening governed by a register or damper, and forming a direct communication between the fire chamber 6 and the cross flue Z Z.

It will be readily seen that when a fire is lighted in the fire chamber, if is be open the heated air passes immediately by the cross flue z c to the smoke pipe 9'. But if 1c be closed the current passes by the flues d cl and e 6 over the oven, and down at its back into the bottom flue f f,whence it ascends by the vertical corner flues g g, and passes by the horizontal cross flue i 2' to the smokepipe.

Z is the sunk hearth adapted to light cooking or summer use, m m is a cast iron plate of the section shown in Fig. 2, and so placed within the, hearth as to leave a vacant space at 01. between it and the latter; which space is intended for a draft flue receiving air through a register 0 in thehearth plate p.

formed into a grate, g. Between the front the fire box I), a spacer r, is left, for the double purpose of affording a direct escape hearth to the smoke pipe, without passing through the firebox. b;and also forming The lower portion of the platelm misv flue doors h h which. :are flush with the front of the stove,and

to the products of combustion in the sunk Q jects, an opening 25 (governed by a damper) 1s made inv the bottom of the cross flue z c. When then the furnace in the sunk hearth is employed, the dampers 0 and 25 being open and 8 closed, the current passes down a n and rising through the'grate bars 9, amid the fuel, escapes by the space u into the flue or chamber 1 r; whence it passes through the opening 25, into the cross flue i z.

The air required to support combustion in I the fire box 6, enters at the register 0 at the front of the hearth, and passing in the manner just mentioned into the flue or chamber 1; 1), becomes heated, (by radiation from the w front of the fire box and the adjacent surfaces of the other flues), and enters beneath the grate c by the register 8.

Itwill be seen that by my arrangement,

the furnace in the sunk hearth is rendered.

entirely independent of the other parts of the stove and may be used either separately or in conjunction therewith. The draftof the hearth' furnace will be equally strong and effective as thatof the principal fire chamber, so that coal may be used as fuel,

and the capacity of the whole stove for cookingbe greatly-increased. The top plate of the stove being perforated for four boilers and the hearthplate for two, the whole six may be used at once.

It is evident that the frontdoors h it opening'into the flue or chamber 1' r, are not es sential to the operation of my stove, as they might be dispensed'with, by using a door 1n the side-of the stove situated at one end of the fire box. The doors however are conb venient for roasting and broiling: the damper i being opened in thelatter case, and

from its height above the hearth insuring the more complete removal of the smoke, &c., arising during the operation.

- I do not intend to claim placing the smoke pipe at the front of the stove, and carrying the draft to the rear around the oven and up in front of the fire box, as I am aware ta flue for the furnace in the sunk, hearth,

communicating by a damper with the cross flue before mentioned and through this latter with the smoke pipe, a nd serving likewise to receive and heat the currentpr external air before itpasses beneath the grate of the fire chamber; and in combination with the foregoing-I also claim the manner in which (by the arrangement of the register 0 in the front of the heart-h plate and the interior plate m mforming the passage n n) I introduce the draft of external air both to the hearth furnace and principal fire chamber. y

NATHANIEL BOSWORTH, J11.

Witnesses: V a

WM. S. ELLISON, CHAS. H. HAzEN. 

